Abstract: The present invention relates to a method for determining a stacked model describing architectural elements from a plurality of architectural element. The method comprises selecting an architectural element, determining merged zone, the merged zone being function of the zone of the selected architectural element and zones of related architectural elements, determining a probabilistic zone, the probabilistic zone being a function of the merged zone, and determining a probabilistic superposition value associated with the determined probabilistic zone, the probabilistic superposition value being a function of the superposition value of the selected architectural element. The previous steps are repeated for each architectural element in the plurality of architectural elements. The method further comprises stacking every determined probabilistic zone in a stacked model according to the determined probabilistic superposition value associated therewith, and providing the stacked model.